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2025-12-18 17:57:01 -

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2025-12-18 17:57:01 -

Building a neural network in Excel might sound like a joke, but it's actually one of the best ways to demystify what's happening under the hood. This walkthrough strips away the abstraction of frameworks and shows forward/backprop as pure math you can click through cell by cell. Great resource for anyone who learns by seeing every calculation laid bare.

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The Machine Learning “Advent Calendar” Day 18: Neural Network Classifier in Excel

Here is a **short, clear excerpt**, written in your style and suitable for Medium or Towards Data Science: --- Neural networks are often presented as black boxes, hidden behind high-level libraries and abstract concepts. In this article, we build a neural network classifier from scratch using Excel, with every computation written explicitly. Starting from forward propagation and ending with backpropagation, we show how the model is defined as a simple mathematical function and how its parameters

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